Composite bathymetric surface of the northern Cascadia Margin offshore Washington

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Jeffrey W. Beeson
Originator: Peter Dartnell
Originator: Janet T. Watt
Publication_Date: 20250423
Title:

Composite bathymetric surface of the northern Cascadia Margin offshore Washington

Geospatial_Data_Presentation_Form: GeoTIFF
Series_Information:

Series_Name: data release
Issue_Identification: DOI: 10.5066/P14SLWTD

Publication_Information:

Publication_Place:

Pacific Coastal and Marine Science Center, Santa Cruz, California

Publisher: U.S. Geological Survey

Other_Citation_Details:

Suggested Citation: Beeson, J.W., Dartnell, P., Watt, J.T., 2025, Composite bathymetric surface of the northern Cascadia Margin offshore Washington: U.S. Geological Survey data release, https://doi.org/10.5066/P14SLWTD.

Online_Linkage: https://doi.org/10.5066/P14SLWTD

Description:

Abstract:

Composite 30-m resolution bathymetric surface of northern Cascadia Margin offshore Washington. The bathymetric surface is available as a GeoTIFF file.

Purpose:

To produce a composite 30-m resolution bathymetric surface of the northern Cascadia Margin offshore Washington State. This bathymetric grid is a cooperative project between the U.S. Geological Survey and National Oceanic and Atmospheric Administration (NOAA) Pacific Marine Environmental Laboratory (PMEL) and Oregon State University. The surface was generated to assist research projects studying offshore geohazards, which include mapping faults, submarine landslides, sediment transport pathways, and sea-floor seeps. These data are not intended to be used for navigation.

Supplemental_Information:

Additional information about the field activities from which these data were derived is available online at:
http://cmgds.marine.usgs.gov/fan_info.php?fan=2018-642-FA http://cmgds.marine.usgs.gov/fan_info.php?fan=2021-010-FA http://cmgds.marine.usgs.gov/fan_info.php?fan=2022-605-DD
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in Esri format, this metadata file may include some Esri-specific terminology.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 2006
Ending_Date: 2022

Currentness_Reference: ground condition at time data were collected.

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -127.042
East_Bounding_Coordinate: -123.379
North_Bounding_Coordinate: 48.534
South_Bounding_Coordinate: 46.195

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:029f0ecb-869b-4bdc-b1c6-a52deaff147e

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: bathymetry
Theme_Keyword: bathymetry measurement
Theme_Keyword: sea-floor characteristics
Theme_Keyword: geospatial datasets
Theme_Keyword: marine geophysics
Theme_Keyword: multibeam sonar

Theme:

Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: Bathymetry and Elevation

Theme:

Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: seabed
Theme_Keyword: field observation

Theme:

Theme_Keyword_Thesaurus: none
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: Pacific Coastal and Marine Science Center
Theme_Keyword: PCMSC

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: State of Washington

Access_Constraints: No access constraints
Use_Constraints:

USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the NOAA Pacific Marine Environmental Laboratory and the U.S. Geological Survey as the originators of the dataset and in products derived from these data. The surface was generated to assist research projects studying offshore geohazards, which include mapping faults, submarine landslides, sediment transport pathways, and sea-floor seeps. The bathymetry grid is not intended to be used for navigation.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey, Pacific Coastal and Marine Science Center

Contact_Person: PCMSC Science Data Coordinator

Contact_Address:

Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name: NorthernCascadia_composite_bathymetry_UTM10_NAD83_QV.jpg
Browse_Graphic_File_Description:

Preview image of the northern Cascadia Margin composite bathymetric surface

Browse_Graphic_File_Type: JPEG

Native_Data_Set_Environment: MB Systems and ArcGIS Pro on a Windows 10 computer.

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted.

Logical_Consistency_Report: No formal logical accuracy tests were conducted.
Completeness_Report:

Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The composite bathymetric surface was generated from a combination of dedicated multibeam surveys, processed bathymetric surfaces received from other institutions, as well as transit data (ancillary data collected while a ship was underway). The bathymetry data were collected over a span of nearly 16 years using various models of echosounders, GPS systems, position and motion compensation systems, sound velocity profilers, and tide measurements. Some datasets provide metadata and reports describing mapping procedures and data quality, including uncertainty measurements and comparisons with other bathymetry data. The horizontal accuracy of bathymetry data in this data release may be lower than stated in the reports due to further data processing.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

The composite bathymetric surface was generated from a combination of dedicated multibeam surveys, processed bathymetry surfaces received from other institutions, as well as transit data (ancillary data collected while a ship was underway). The bathymetry data were collected over a span of nearly 16 years using various models of echosounders, GPS systems, position and motion compensation systems, sound velocity profilers, and tide measurements. Some datasets provide metadata and reports describing mapping procedures and data quality, including uncertainty measurements and comparisons with other bathymetry data. The vertical accuracy of bathymetry data in this data release may be lower than stated in the reports due to further data processing.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: National Ocean Service (NOS), NOAA
Publication_Date: 2025
Title: NOS Hydrographic Survey Collection
Geospatial_Data_Presentation_Form: Raster Digital Dataset
Publication_Information:

Publication_Place: online
Publisher: NOAA National Center for Environmental Information (NCEI)

Online_Linkage: https://www.ncei.noaa.gov/maps/bathymetry/

Type_of_Source_Media: online database
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 2006
Ending_Date: 2022

Source_Currentness_Reference: ground condition at time data were collected

Source_Citation_Abbreviation: NOAA multibeam
Source_Contribution:

Multibeam data from surveys offshore Washington. For detailed information on the sources used, see the table of data sources in the Support File section of this data release.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Global Multi-Resolution Topography Synthesis (GMRT)
Publication_Date: 2025
Title: Global Multi-Resolution Topography (GMRT) synthesis data set
Geospatial_Data_Presentation_Form: Raster Digital Dataset
Publication_Information:

Publication_Place: online
Publisher: Global Multi-Resolution Topography Synthesis (GMRT)

Online_Linkage: https://doi.org/10.1594/IEDA.100001

Type_of_Source_Media: online database
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 2006
Ending_Date: 2022

Source_Currentness_Reference: ground condition at time data were collected

Source_Citation_Abbreviation: GMRT bathymetry
Source_Contribution: Bathymetric data

Process_Step:

Process_Description:

NOAA PMEL created a composite multibeam bathymetric surface of the northern Cascadia Margin region generated from publicly available data.

Source_Used_Citation_Abbreviation: NOAA multibeam
Process_Date: 2024
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

NOAA Pacific Marine Environmental Laboratory and Oregon State University

Contact_Person: Dr. Jeffrey Beeson

Contact_Address:

Address_Type: mailing and physical
Address: 2115 SE Oregon State University Drive
City: Newport
State_or_Province: OR
Postal_Code: 97365

Contact_Voice_Telephone: NA
Contact_Electronic_Mail_Address: jeff.beeson@noaa.gov

Process_Step:

Process_Description:

The USGS received the NOAA PMEL bathymetric surface in geographic coordinates. The USGS projected the original bathymetric surface to UTM, zone 10, NAD83 coordinates at 30-m spatial resolution. Shallower water bathymetry data on the continental shelf were clipped from the surface.

Source_Used_Citation_Abbreviation: NOAA multibeam
Process_Date: 2024

Process_Step:

Process_Description:

Multibeam data from four surveys offshore Washington (W00306, W00311, W00353, W00445) were downloaded from NOAA National Center for Environmental Information (https://www.ncei.noaa.gov/maps/bathymetry/) in Bathymetric Attributed Grid (BAG) format. In ArcGIS Pro, surfaces were projected to UTM, zone 10, NAD83 coordinates and resampled to 30-m spatial resolution if needed. Bathymetric data were downloaded from the Global Multi-Resolution Topography Synthesis (GMRT) website (https://www.gmrt.org/). In ArcGIS Pro, all the bathymetric surfaces were merged in the following order: four BAG surveys, NOAA PMEL, GMRT. The composite grid was exported as a GeoTIFF grid in UTM, zone 10, NAD83 coordinates. A spreadsheet (CSV format) of data sources used to generate the surface is included in the Support File section of the data release. The spreadsheet information includes, ship, cruise ID, year, multibeam system, organization, and source URL.

Source_Used_Citation_Abbreviation: NOAA multibeam
Source_Used_Citation_Abbreviation: GMRT bathymetry
Process_Date: 2025

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:

Raster_Object_Type: Grid Cell
Row_Count: 8663
Column_Count: 6760
Vertical_Count: 1

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:

UTM_Zone_Number: 10
Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -123.00000
Latitude_of_Projection_Origin: 0.00000
False_Easting: 500000.0
False_Northing: 0.00

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:

Abscissa_Resolution: 30.0
Ordinate_Resolution: 30.0

Planar_Distance_Units: Meters

Geodetic_Model:

Horizontal_Datum_Name: NAD83
Ellipsoid_Name: GRS80
Semi-major_Axis: 6378137.00
Denominator_of_Flattening_Ratio: 298.257223563

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: instantaneous sea level
Altitude_Resolution: 0.1
Altitude_Distance_Units: meters
Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: NorthCascadia_composite_bathymetry_UTM10_NAD83.tif
Entity_Type_Definition: Raster values represent depth in meters.
Entity_Type_Definition_Source: Producer defined

Detailed_Description:

Entity_Type:

Entity_Type_Label: NorthernCascadia_composite_bathymetry_data_sources.xlsc (.csv)
Entity_Type_Definition:

Table containing attribute information associated with the data set.

Entity_Type_Definition_Source: USGS

Attribute:

Attribute_Label: Ship
Attribute_Definition: name of the survey vessel
Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Unrepresentable_Domain: name of the survey vessel

Attribute:

Attribute_Label: Cruise ID
Attribute_Definition: Cruise Identifier
Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Unrepresentable_Domain: unique cruise identification assigned by each institution

Attribute:

Attribute_Label: Year
Attribute_Definition: Year of data collection
Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 2006
Range_Domain_Maximum: 2023

Attribute:

Attribute_Label: Multibeam
Attribute_Definition: multibeam system used to collect data
Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Unrepresentable_Domain:

type and model of various instrument(s) used to collect the multibeam data on each cruise

Attribute:

Attribute_Label: Organization
Attribute_Definition:

Group, Organization, Agency, Program, or Project that collected the data

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Unrepresentable_Domain:

Group, Organization, Agency, Program, or Project that collected the data

Attribute:

Attribute_Label: Source
Attribute_Definition: data source URL
Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Unrepresentable_Domain: data source URL

Overview_Description:

Entity_and_Attribute_Overview:

The complete 30-m resolution "NorthCascadia_composite_bathymetry_UTM10_NAD83.tif" grid was originally archived as a TIFF image with the following attributes.

Cell size = 30.0
Number of rows = 8663
Number of columns = 6760

Data type = floating point

Boundary
Xmin = 186946
Xmax = 389714
Ymin = 5124384
Ymax = 5384252

Statistics
Minimum value = -2787.04
Maximum value = -111.72
Mean = -1805.94
Standard deviation = 748.77

Coordinate system description
Projection  UTM
Zone  10
Datum  NAD83
Units  meter

Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey - CMGDS

Contact_Address:

Address_Type: Mailing and Physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

Contact_Voice_Telephone: 1-831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov

Resource_Description:

These data are available in GeoTIFF format, including a tif world file (.tfw) and CSDGM FGDC-compliant metadata.

Distribution_Liability:

Unless otherwise stated, all data, metadata, and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: GeoTIFF
Format_Version_Number: ArcMap (version 10.3.1)
Format_Information_Content:

Downloadable zip file contains the TIFF (.tif) and the projection file (.tfw).

File_Decompression_Technique: WinZip
Transfer_Size: 117

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: https://doi.org/10.5066/P14SLWTD

Access_Instructions:

Data can be downloaded using the Network_Resource_Name link and scrolling down to the Location-Elevation Data section.

Fees: None.

Technical_Prerequisites:

The downloadable data file has been compressed with the "zip" command and can be unzipped with Winzip (or other tool) on Windows systems. To utilize these data, the user must have software capable of uncompressing the WinZip file and importing and viewing a GeoTIFF file.

Metadata_Reference_Information:

Metadata_Date: 20250423
Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey, Pacific Coastal and Marine Science Center

Contact_Person: PCMSC Science Data Coordinator

Contact_Address:

Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov

Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/CMGDS_DR_tool/DR_P14SLWTD/NorthernCascadia_composite_bathymetry_UTM10_NAD83_metadata.html>